Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ccf3690f6d0a5af…

MALICIOUS

PDF

76.9 KB Created: 2021-03-15 03:24:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 45b2f349f28eac79053d6306d8840d92 SHA-1: 53bcac25034c80cd3305fc4707b234a29f06a465 SHA-256: 0ccf3690f6d0a5af3685b30f573241f28f7143719582a5d23b293a3e5f9d2014
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://dafemum.ru/wix?keyword=army+jrotc+rank+requirements PDF link annotation
    • https://famunekagazata.weebly.com/uploads/1/3/4/4/134463602/bematoguxelori_najumejumajoz.pdfIn PDF document text
    • http://xuratalusat.22web.org/cuanto_es_250_gramos_de_manteca_en_tazas.pdfIn PDF document text
    • http://masovizifuzaro.iblogger.org/commerce_commission_collaborative_activities_guidelines.pdfIn PDF document text
    • https://melugazeso.weebly.com/uploads/1/3/1/1/131164252/jivizu.pdfIn PDF document text
    • https://cdn.sqhk.co/gudopokobipa/Xuhjidf/disneyland_park_tickets_paris.pdfIn PDF document text
    • https://cdn.sqhk.co/dodanadofu/VU4DWjc/rapunzel_tangled_cast.pdfIn PDF document text
    • http://fuvesozufinefi.medianewsonline.com/imbalanced_nutrition_care_plan_for_elderly.pdfIn PDF document text
    • http://de-bewertung-id2842384.icu/el_libro_negro_del_comunismo_gratis72kej.pdfIn PDF document text
    • http://geekcods.com/69165416819oo94i.pdfIn PDF document text
    • https://kuxubujokug.weebly.com/uploads/1/3/0/7/130775750/xidute_duxarofa.pdfIn PDF document text
    • https://vesabigixovo.weebly.com/uploads/1/3/1/8/131857304/2368bad3da0aa.pdfIn PDF document text
    • http://vobonenagixavus.66ghz.com/53641408024.pdfIn PDF document text
    • https://tirotulesi.weebly.com/uploads/1/3/4/8/134849952/daf3aa.pdfIn PDF document text
    • http://bidizujimon.getenjoyment.net/advertising_and_integrated_brand_promotion_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbad2ee1-4753-4204-a3ad-6dfc7455e329/lactancia_materna_despues_de_los_dos_aos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7406578d-c108-452c-989d-e530f52a4225/what_is_a_good_vocabulary_size.pdfIn PDF document text
    • http://wudazebej.atwebpages.com/porter_cable_fn250b_finish_nailer.pdfIn PDF document text
    • http://piwolimosopobu.myartsonline.com/familia_enterobacterias.pdfIn PDF document text
    • http://zavinawotomuvef.epizy.com/motu_patlu_arasargalin_arasan_movie.pdfIn PDF document text
    • http://godavuvexo.epizy.com/the_amazing_spider_man_games_for_android.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDFF 5268 bytes
SHA-256: 2792ace6b2fdab748459c2611845425cc4fe2b0ab2a5c75a5f3e9d5e8336437a
font_01_sfnt_off0000ffe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE7 10936 bytes
SHA-256: c34dc8ec8a7f67dfd1832664b60dd6e257dc2c21128afb47db10e15ad8e1e527

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